40
Plug
Sensor
Type
F7
(X25.7/X25.8)
Cylinder temperature sensor, bottom
NTC 10 kΩ
F11
Contact humidistat 24 V–
Note
If a 230 V~ contact humidistat (connection to
X3.8/X3.9) is used for cooling, insert a jumper,
otherwise the heat pump will not start (message
"Protectn device primry").
―
F13
System flow temperature sensor (downstream of
the heating water buffer cylinder and external
heat source)
NTC 10 kΩ
F14
Flow temperature sensor, cooling circuit (heating
circuit without mixer A1/HC1 or separate cooling
circuit SKK)
NTC 10 kΩ
F16
Room temperature sensor for separate cooling
circuit SKK (required) or for heating/cooling cir-
cuit without mixer A1/HC1 (recommended)
NTC 10 kΩ
F20
Boiler water temperature sensor, external heat
source
NTC 10 kΩ
aVG
KM BUS (wires interchangeable)
Use the KM BUS distributor (accessories) if sev-
eral devices are connected.
KM BUS subscribers (examples):
■ Extension kit for one heating circuit with mixer
M2/HC2
■ Remote control for Vitotrol 200A or
Vitotrol 300B (set the heating circuit assign-
ment at the remote control)
■ Extension EA1, extension AM1
■ Vitocom communication interface
sVA
Modbus 2 (wires
not
interchangeable)
Connection for 1-phase or 3-phase electricity
meter
J3
Jumper for terminator Modbus 2
Terminator enabled (delivered condition)
Terminator disabled
Installation sequence
Electrical connections
(cont.)
5782 176 GB
